public ComparedEntity Create(string representation)
{
if (representation == null)
{
Logger.Error($"{nameof(representation)} is null");
throw new ArgumentNullException(nameof(representation));
}
var parsedFragment = _fragmentFactory.CreateFragment(representation);
var result = new ComparedEntity
{
Tree = parsedFragment.Fragment,
ParseErrors = parsedFragment.ParseErrors,
Representation = representation
};
var symbolVisitor = new ProcedureObjectNameVisitor(result.Identifier);
result.Tree.Accept(symbolVisitor);
return(result);
}
private ComparisonResult Compare(CompareOptions compareOptions, ComparedEntity entity1, ComparedEntity entity2)
{
var comparisonResult = new ComparisonResult
{
LeftEntity = entity1,
RightEntity = entity2,
CompareOptions = compareOptions
};
var entity1Tokens = entity1.Tree.ScriptTokenStream.AsEnumerable();
var entity2Tokens = entity2.Tree.ScriptTokenStream.AsEnumerable();
if (compareOptions.IgnoreWhitespace)
{
entity1Tokens = entity1Tokens.Where(x => x.TokenType != TSqlTokenType.WhiteSpace);
entity2Tokens = entity2Tokens.Where(x => x.TokenType != TSqlTokenType.WhiteSpace);
}
if (compareOptions.IgnoreEndOfFile)
{
entity1Tokens = entity1Tokens.Where(x => x.TokenType != TSqlTokenType.EndOfFile);
entity2Tokens = entity2Tokens.Where(x => x.TokenType != TSqlTokenType.EndOfFile);
}
// Important: only windows newlines so far. Add others too
// Newlines are just whitespace but with the newline characters
if (compareOptions.IgnoreNewLines)
{
entity1Tokens = entity1Tokens.Where(x => x.TokenType != TSqlTokenType.WhiteSpace && x.Text != "\r\n");
entity2Tokens = entity2Tokens.Where(x => x.TokenType != TSqlTokenType.WhiteSpace && x.Text != "\r\n");
}
var areEqual = AreEqual(
entity1Tokens,
entity2Tokens,
comparisonResult.LinesDifferingInLeftEntity,
comparisonResult.LinesDifferingInRightEntity,
compareOptions);
comparisonResult.Outcome = areEqual ? ComparisonOutcome.Equal : ComparisonOutcome.Different;
// Re-using the original ScriptTokenStream so we don't use the filtered stream based on compareOptions
var entity1LineByLine = entity1.Tree.ScriptTokenStream.GroupBy(x => x.Line);
foreach (var line in entity1LineByLine)
{
comparisonResult.LeftSourceTreeByLine.Add(line.Key, string.Join(string.Empty, line.Select(x => x.Text)));
}
var entity2LineByLine = entity2.Tree.ScriptTokenStream.GroupBy(x => x.Line);
foreach (var line in entity2LineByLine)
{
comparisonResult.RightSourceTreeByLine.Add(line.Key, string.Join(string.Empty, line.Select(x => x.Text)));
}
// Done after the actual line-by-line check to make sure it doesn't get overwritten
if (string.IsNullOrWhiteSpace(entity1.Representation) || string.IsNullOrWhiteSpace(entity2.Representation))
{
comparisonResult.Outcome = ComparisonOutcome.Missing;
}
return(comparisonResult);
}
